Combination door stop and catch device



Aug. 1927.

s. a. HAS ELLTINE COMBINATION DOOR STOP AND CATCH DEVICE.

Filed Oct. 13. 1923 Patented Aug. 23, 1927.

pairs o stairs-s PATENT easie STACY B. HAsEL'rr n, or OAHICAIGO;'ItLINois, nssrorivore, BY MEsNEAss IGNMEnTs,

To W. HJMINER, INQ, A CORPORATION or DELAWARE.

oorvtieiuazrtori noons'ror AND cATorrnE'vroEj Aliplic'a'tion filedOctober 13, 1923. Serial No. 668,283.

This invention relates to improvements in combination door stop andcatch devices.

One object of the invention to provide an automatically operatinglatching mechanism for swinging doors, and more particularly forrefrigerator car doors.

More specifically, an object of the inven tion is to provide a latchwhich will retain the door in open position, having combined therewithmeans acting as a stop for the door.

Other objects and-advantages of the invention will more clearly appearfrom the description and claims hereinafter follow ing.

In the drawing forming a part of this side door opening for a pair ofpivotally' hung doors ll' and 12, the latter swinging about verticalaxes on hinges 13 in the usual manner. tained in closed'position by apivoted latch 14. The'door 12is swung into closed. position last andheld in that positionby any suitable means as, for example, the shaft15' having means at the upp'er'and'low'er ends engaging witliintliebrackets 16 secured to the side wall 10. s

' In carrying out my invention, I employ a latching mechanism for eachdoor comprising a plate A, a housing B, and a latch plate C, either ofthe members A or B being adapted for attachment to either the door or tothe wall of the car or fixed supporting means to which the door isattached. In the instance shown, the plate A is attached to the door andthe housing B to the side wall of the car.

The plate A, preferably centrally thereof, is provided with a projection17 extending outwardly from the body of the plate at right anglesthereto. The projection 17 has a head 18 at its outer free end, the

The door 11 is closed first andrea upper surface of the head providing acam face 19 inclined to the horizontal, downwardly away. from the door.On the rear sine of the head of the projection 17, that is, the sidenearest the plate A, a locking shoulder 20 is provided, the face ofwhich is preferably fiat and extends vertically. At

the base, that is, the end adjacent the plate A, the projection 17 isthicken-ed as indicated at 21, and the upper surface of the projectionintermediate the head 18 and the thickened base portion is preferablyupwardly inclined toward the door L0 correspond to the inclination ofthe cam face 19, as indicated at 22,

and the thickened portion is extended above the surface 22, therebyproviding avertically disposed abutment shoulder 28. Each plate A may befixed to the corresponding door by any suitable'means, but is preferablysecured by screws located respectively at the upper and lower ends ofthe plate.

The housing B is of generally rectangular outline. and is provided withtop and bottom walls 24 and 25, side walls 2626. a front wall 27, apartial rear wall 28 and a horizontally arranged web 29 extendingtransversely of the housing; vThe web 2.9 is disposed substantially.midway between" the top and bottom of tliehousing andv is connected totheitopof the rear wall 28, thereby dividingthe housing into an upperand a lowerchainber, the'upper chamber being open at the rear side andthe lower chamber being closed by the rear wall 28. The bottom wall andthe central web-29 arm na'te. short of'the frontwall 27, therebyproviding guide openings 30 80, adapted to accommodate alatch bar Oforvertical slid ing movement.

The latchbar (l is in the form of a flat plate of rectangular outlinehaving a knob like enlargement 31 at its lower end forming a hand gripby which the bar C may be manipulated. The upper end of the bar Cextends into the upper chamber of the housing and is provided with avertically extending, relatively short slot 82 through which a bolt 83extends. The bolt 33 serves to retain the bar within the housing andthrough engagement with the upper and lower end walls of the slot 32limits the vertical sliding movement of the bar. The bolt 33 also servesas part of the means for securing the housing B to the car wall.extending through the latter and the front enses wall 27 of the housing,with its head abutting the outer face of the front wall 27. The housinis preferably also secured to the car wall by a screw or other suitablefastening device passing through the rear wall 28 of the housing.

The lower end of the latch bar G protrudes beyond the lower end of thehousing 13 as clearly shown in Figures 2 and 3 and adjacent the lowerend thereof, a second, Vertically disposed slot 3 1 of relativelygreater length than the slot 33 is provided. The slot 34 is of such awidth as to loosely accommodate the outer hook shaped end of theprojection 17 and the wall defining the upper end of the slot iscorrespondingly inclined to the surfaces 19 and 21 of the projection 17,thereby providing a cam surface 35 adapted to coact with said surfaces.The lower portion of the front wall of the housing B is also slottedvertically as indicated at 36 to permit the hook portion of the projection 17 to enter the lower chamber of the housing B, the slot 36corresponding in length to the distance between the bottom wall 25 andthe web 29 and in width to the width of the slot 3%, and being inalinement with the latter.

In the operation of my improved mechanism, when the door is swung open,the projection 17 on the latch plate *ill enter the housing through theslot and the cam face 19 on the head 18, engaging the cam face of thebar C, will elevate the latter until the head 18 has passed through thebar, whereupon the bar will drop clownwardly due to gravity, engagingbehind the shoulder 20. The door will then be retained in open positionby the latch bar C coacting with the abutment face 20 of the head 18.The parts are so proportioned that, in case of excessive throw of thedoor in an opening direction, the movement of the same will be limitedby engagement of the abutment shoulder 23 of the member A with the frontsurface of the bar C as clearly shown in Figure 2, the bar being in turnsustained by the end faces of the web 29 and the bottom wall 25 of thehousing.

To effect release of the latching means, the bar C is pushed upwardly,thereby permitting the withdrawal of the head 18 from the slot at.

I have herein shown and described What I now consider the preferredmanner of carrying out my invention, but the same is merelyillustrative, andl contemplate all changes and modifications that comewithin the scope of the claims appended hereto.

I claim:

1. In a latch for a swinging door, the combination with a pair ofsupports fixed respectively to the door and the fixed member on whichthe door is mounted; of a slotted, gravity influenced plate slidablyconfined on one of said supports; and an extension formed integral withthe other support, adapted to be projected through said slot, saidextension having a shoulder thereon adapted to engage behind said plateto retain the door in open position, said errtension having a secondshoulder thereon extending above said first-named shoulder and adaptedto engage tiie front of said plate at an angle to its sliding movementto limit the opening movement of the door.

2. In a latch mechanism for a swinging door, the combination with a pairof sup ports lined respectively to the door and the fixed member onwhich the door is mounted, one of said supports comprising a housinghaving top, bottom and front walls, and a web dividing said housing intoupper and lower chambers, said web and the bottom wall of said housinghaving portions terminating short of said front wall to provide a guideway; a latching plate normally urged toward engaging position andslidably confined in said guide way, the upper portion of said platebeing slidably secured in said upper chamber; and a shouldered member onsaid other support adapted to be moved into engagement with saidlatching plate and automatically retained thereby.-

In witness that I claim the foregoing I have hereunto subscribed my namethis 10th day of October, 1923.

STACY B. HASELTINE.

